public enum Day {
  SUNDAY(1),
  MONDAY(2),
  TUESDAY(3),
  WEDNESDAY(4),
  THURSDAY(5),
  FRIDAY(6),
  SATURDAY(7);

  private int value;

  private Day(int value) {
    this.value = value;
  }

  public int getValue() {
    return this.value;
  }

  public String toString() {
    switch(this) {
      case MONDAY:
        return "Monday: " + value;
      case TUESDAY:
        return "Tuesday: " + value;
      case WEDNESDAY:
        return "Wednesday: " + value;
      case THURSDAY:
        return "Thursday: " + value;
      case FRIDAY:
        return "Friday: " + value;
      case SATURDAY:
        return "Saturday: " + value;
      case SUNDAY:
        return "Sunday: " + value;
      default:
        return null;
    }
  }
}
